---
type: "Bill"
title: "A bill for an act relating to exemptions from disciplinary action for persons licensed to practice health-related professions based on their treatment of Lyme disease or other tick-borne diseases, and including effective date provisions. (Formerly HF 112.) Effective 3-23-17."
description: "A bill for an act relating to exemptions from disciplinary action for persons licensed to practice health-related professions based on their treatment of Lyme disease or other tick-borne diseases, and including effective date provisions. (Formerly HF 112.) Effective 3-23-17."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2017-2018"
identifier: "HF 577"
citation: "Iowa HF 577 (2017-2018)"
classification: ["bill"]
subjects: ["health-related professions", "lyme disease", "medical care", "medicine", "professional licensure", "professions"]
status: "enacted"
primary_sponsors: []
version_count: 3
action_count: 16
vote_count: 2
first_action: "2017-03-09"
last_action: "2017-03-27"
source: "openstates"
source_identifier: "ocd-bill/58b2c899-9346-4526-97e4-58481f42aeda"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 577&ga=87"
source_hash: "b7f0008d28fb9867be853faa8408834b4266815a75a230ef0412ebd52b725aa7"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ia"]
---

# Iowa HF 577 (2017-2018) — A bill for an act relating to exemptions from disciplinary action for persons licensed to practice health-related professions based on their treatment of Lyme disease or other tick-borne diseases, and including effective date provisions. (Formerly HF 112.) Effective 3-23-17.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/87/attachments/HF577.html)
2. **Amendment S-3156** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/87/S3156.pdf)
3. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/87/attachments/HF577.html)

## Votes

- Shall the bill pass? — **49–0** (pass) · upper
- Shall the bill pass? — **93–0** (pass) · lower

## Timeline

The legislative action history — every referral, reading, and vote.

- **2017-03-09** Introduced, placed on calendar. `introduction`
- **2017-03-14** Passed House, ayes 93, nays 0. `passage`
- **2017-03-14** Explanation of vote.
- **2017-03-14** Immediate message.
- **2017-03-14** Message from House.
- **2017-03-14** Read first time and attached to companion SF 480. `reading-1`
- **2017-03-15** Amendment S-3156 filed. `amendment-introduction`
- **2017-03-21** Substituted for SF 480.
- **2017-03-21** Point of order raised on S-3156, ruled out of order.
- **2017-03-21** Passed Senate, ayes 49, nays 0. `passage`
- **2017-03-27** Explanation of vote.
- **2017-03-21** Immediate message.
- **2017-03-21** Message from Senate.
- **2017-03-23** Reported correctly enrolled, signed by Speaker and President.
- **2017-03-23** Sent to Governor. `executive-receipt`
- **2017-03-23** Signed by Governor. `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/58b2c899-9346-4526-97e4-58481f42aeda`. Confidence: reported (aggregated from official Iowa legislature records).